Assuming the beans were processed according to current safe guidelines they are still safe to eat, though over time the beans above the liquid will soften, perhaps discolor and be less appealing. If you process other batches of beans move these to the front and consume them first.

Carol

The beans will be safe unless you shortened the processing time by not doing the 10 min venting ot the 10 min wait between removing the weight and removing the lid. However their shelf life is limited. The guidelines read:

If, however, the loss is excessive (for example, if at least half of the liquid is lost), refrigerate the jar(s) and use within 2 to 3 days.

The beans above the liquid will shrivel and darken but you can dispose of them after opening the jars.

But for the future you need to determine what caused the problem and eliminate it.

Dave

"Q. Why do my jars lose liquid during processing?

A. Liquid is drawn from jars during processing for the following reasons:

• Jars were packed too solidly with food or were overfilled. Allow 1/2-inch headspace for all fruits and tomatoes, and 1-inch headspace for vegetables, meat, poultry, and seafood. This is necessary since food expands during canning.
• Exhaust period was insufficient.
• Pressure regulator on the weighted gauge canner rocked vigorously during processing. Always maintain a slow, steady rocking motion.
• An unsteady heat source or steam leakage caused a fluctuation of pressure during processing.
• Removing or bumping the pressure regulator before pressure has completely dropped. Pressure should always drop of its own accord.
• Uneven pressure from rapid temperature changes or drafts blowing on the canner.
• Lids were not adjusted according to manufacturer’s directions.
• Failure to precook food before packing in jars thus allowing shrinkage to occur in the jar. It is especially important to preheat fruit.
• Failure to allow the canner to remain closed for 10 minutes after pressure has completely dropped.

If all canning procedures have been followed and the lids have sealed, the food is safe to store and eat. However, because liquid was lost during canning, food above the liquid line may discolor during storage. Plan to use these jars first."